﻿using System;
using System.Linq;
using System.Globalization;
using System.Security.Principal;
using System.Web.Mvc;
using System.Web.Security;
using Ext.Net.MVC;
using System.Web.UI.MobileControls;
using System.Collections.Generic;
using Ext.Net;
using Buffalo.Lib.Common;
using Buffalo.Administration.DAL;

namespace Buffalo.Web.Areas.SMECommon.Controllers
{
    [HandleError]
    public class MemberController : Controller
    {
        // This constructor is used by the MVC framework to instantiate the controller using
        // the default forms authentication and membership providers.
        public MemberController() : this(null, null) { }

        // This constructor is not used by the MVC framework but is instead provided for ease
        // of unit testing this type. See the comments at the end of this file for more
        // information.
        public MemberController(IFormsAuthentication formsAuth, IMembershipService service)
        {
            this.FormsAuth = formsAuth ?? new FormsAuthenticationService();
            this.MembershipService = service ?? new AccountMembershipService();
        }

        public IFormsAuthentication FormsAuth
        {
            get;
            private set;
        }

        public IMembershipService MembershipService
        {
            get;
            private set;
        }
        public ActionResult Logout()
        {
            this.FormsAuth.SignOut();
            ViewData["Username"] = string.Empty;
            return this.RedirectToAction("Login", "Desktop/Member");
        }
        [Authorize]
        public ActionResult ChangePassword()
        {
            this.ViewData["PasswordLength"] = MembershipService.MinPasswordLength;
            return this.View("ChangePassword");
        }

        [AcceptVerbs(HttpVerbs.Post)]
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes",
            Justification = "Exceptions result in password not being changed.")]
        public ActionResult ChangePassword(string txtCurrentPassword, string txtNewPassword, string txtConfirmPassword, string returnUrl)
        {
            string currentPassword = txtCurrentPassword.Trim();
            string newPassword = txtNewPassword.Trim();
            string confirmPassword = txtConfirmPassword.Trim();

            this.ViewData["PasswordLength"] = MembershipService.MinPasswordLength;

            if (String.IsNullOrEmpty(currentPassword))
            {
                return new AjaxResult { ErrorMessage = "You must specify a current password" };
            }
            if (newPassword == null || newPassword.Length < MembershipService.MinPasswordLength)
            {
                return new AjaxResult { ErrorMessage = string.Format("The new password must not less than {0} characters", MembershipService.MinPasswordLength) };
            }

            if (!String.Equals(newPassword, confirmPassword, StringComparison.Ordinal))
            {
                return new AjaxResult { ErrorMessage = "The new password and confirmation password do not match." };
            }

            try
            {
                if (MembershipService.ChangePassword(User.Identity.Name, currentPassword, newPassword))
                {
                    return this.View();
                }
                else
                {
                    //this.ModelState.AddModelError("_FORM", "The current password is incorrect or the new password is invalid.");
                    return new AjaxResult { ErrorMessage = "The current password is incorrect or the new password is invalid." };
                    //return this.View();
                }
            }
            catch
            {
                return new AjaxResult { ErrorMessage = "The current password is incorrect or the new password is invalid." };
                //this.ModelState.AddModelError("_FORM", "The current password is incorrect or the new password is invalid.");
                //return this.View();
            }
        }

        public ActionResult ChangePasswordSuccess()
        {
            return this.View();
        }

        protected override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            if (filterContext.HttpContext.User.Identity is WindowsIdentity)
            {
                throw new InvalidOperationException("Windows authentication is not supported.");
            }
        }

        #region Validation Methods

        private bool ValidateChangePassword(string currentPassword, string newPassword, string confirmPassword)
        {
            if (String.IsNullOrEmpty(currentPassword))
            {
                this.ModelState.AddModelError("currentPassword", "You must specify a current password.");
            }
            if (newPassword == null || newPassword.Length < MembershipService.MinPasswordLength)
            {
                this.ModelState.AddModelError("newPassword",
                    String.Format(CultureInfo.CurrentCulture,
                         "You must specify a new password of {0} or more characters.",
                         MembershipService.MinPasswordLength));
            }

            if (!String.Equals(newPassword, confirmPassword, StringComparison.Ordinal))
            {
                this.ModelState.AddModelError("_FORM", "The new password and confirmation password do not match.");
            }

            return this.ModelState.IsValid;
        }

        private bool ValidateLogOn(string userName, string password)
        {
            if (String.IsNullOrEmpty(userName))
            {
                this.ModelState.AddModelError("username", "You must specify a username.");
            }
            if (String.IsNullOrEmpty(password))
            {
                this.ModelState.AddModelError("password", "You must specify a password.");
            }
            if (!MembershipService.ValidateUser(userName, password))
            {
                this.ModelState.AddModelError("_FORM", "The username or password provided is incorrect.");
            }
            return Membership.ValidateUser(userName, password);
        }

        private bool ValidateRegistration(string userName, string email, string password, string confirmPassword)
        {
            if (String.IsNullOrEmpty(userName))
            {
                this.ModelState.AddModelError("username", "You must specify a username.");
            }
            if (String.IsNullOrEmpty(email))
            {
                this.ModelState.AddModelError("email", "You must specify an email address.");
            }
            if (password == null || password.Length < MembershipService.MinPasswordLength)
            {
                this.ModelState.AddModelError("password",
                    String.Format(CultureInfo.CurrentCulture,
                         "You must specify a password of {0} or more characters.",
                         MembershipService.MinPasswordLength));
            }
            if (!String.Equals(password, confirmPassword, StringComparison.Ordinal))
            {
                this.ModelState.AddModelError("_FORM", "The new password and confirmation password do not match.");
            }
            return this.ModelState.IsValid;
        }

        private static string ErrorCodeToString(MembershipCreateStatus createStatus)
        {
            // See http://msdn.microsoft.com/en-us/library/system.web.security.membershipcreatestatus.aspx for
            // a full list of status codes.
            switch (createStatus)
            {
                case MembershipCreateStatus.DuplicateUserName:
                    return "Username already exists. Please enter a different user name.";

                case MembershipCreateStatus.DuplicateEmail:
                    return "A username for that e-mail address already exists. Please enter a different e-mail address.";

                case MembershipCreateStatus.InvalidPassword:
                    return "The password provided is invalid. Please enter a valid password value.";

                case MembershipCreateStatus.InvalidEmail:
                    return "The e-mail address provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidAnswer:
                    return "The password retrieval answer provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidQuestion:
                    return "The password retrieval question provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidUserName:
                    return "The user name provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.ProviderError:
                    return "The authentication this.provider returned an error. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                case MembershipCreateStatus.UserRejected:
                    return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                default:
                    return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
            }
        }
        #endregion

     }
}